Washington (CNN) - The United States has contacted authorities in Hong Kong to seek the extradition of Edward Snowden, the man who admitted leaking top-secret details about U.S. surveillance programs, a senior U.S. administration official said Saturday.

Federal prosecutors charged Snowden with espionage and theft of government property, according to a criminal complaint unsealed in U.S. District Court in Virginia on Friday.

Washington (CNN) – President Barack Obama will announce his plans to "reduce carbon pollution" in a climate change speech next week, the White House announced Saturday.

"There's no single step that can reverse the effects of climate change. But when it comes to the world we leave our children, we owe it to them to do what we can," Obama said in a video released on the White House's YouTube page.FULL POST

(CNN) – When President Barack Obama visits Africa next week, his predecessor, George W. Bush, also will be on the continent.

Obama flies Wednesday across the Atlantic for a trip that takes him to Senegal, South Africa and Tanzania, marking his second visit to sub-Saharan Africa as president (He went to Ghana during his first term).FULL POST

London (CNN) – WikiLeaks founder Julian Assange urged the world Saturday to "stand with" Edward Snowden, the man who admitted leaking top-secret details about U.S. surveillance programs, according to the text of a speech posted on Twitter.

As he appealed for a "brave country" to step forward and offer Snowden asylum, Assange also accused U.S. President Barack Obama of betraying a generation of "young, technically minded people."

Washington (CNN) – Federal prosecutors have charged Edward Snowden, the man who admitted leaking top-secret details about U.S. surveillance programs, with espionage and theft of government property, according to a criminal complaint unsealed in U.S. District Court in Virginia on Friday.

The United States has asked Hong Kong, where Snowden is believed to be in hiding, to detain the former National Security Agency contract analyst on a provisional arrest warrant, The Washington Post reported, citing unnamed U.S. officials.

Washington (CNN) – Momentum in the Senate may be building for passage of a comprehensive immigration reform bill after a border security deal was announced this week, but House GOP opposition to immigration legislation remains the biggest roadblock to a bill getting to the president's desk, and that opposition only appears to be hardening.

The messy demise of the farm bill on the House floor on Thursday demonstrated the divisions within GOP ranks and the willingness of dozens of rank-and-file members to ignore their leadership. While there's not a clear parallel between that bill's failure and the road ahead for immigration reform, the episode does underline the exceedingly tough task House Speaker John Boehner, R-Ohio, faces as he attempts to guide immigration legislation through the House.

(CNN) – As senators continue to weigh comprehensive immigration reform, President Barack Obama made another call Saturday for an overhaul of the current system.

Speaking in his weekly address, Obama again endorsed a bipartisan Senate plan which would create a pathway to citizenship for undocumented immigrants while bolstering security at the southern border. This week, an amendment was unveiled that further ramped up border security – an attempt to woo Republicans still deciding whether to support the larger bill.FULL POST

(CNN) – With about a week to go before interest rates jump on certain types of student loans, Republicans are again calling on the White House and Senate Democrats to approve a plan that would avert the spike.

On July 1, rates will almost double on nonsubsidized Stafford loans given to college undergraduates unless Congress works to avoid the jump. Obama has applied pressure on Republicans to adopt his own plan to avoid the rate increase, but Republicans argue Obama basically agrees with their approach, which would tie the student loan rate to economic factors instead of leaving it up to Congress.FULL POST